FBI agents are not paid in hourly wages, they are paid through the federal government system GS ratings which provides agents an annual salary rating for years served.
The tariff of the United States, like all actual protective tariffs, is partly revenue and partly protective, its original purpose of yielding revenue having been subordinated to that of giving protection, until it may now be best described as a protective tariff yielding incidental revenue.
Protective tariff. Protective tariffs are tariffs that are enacted with the aim of protecting a domestic industry. Tariffs are also imposed in order to raise government revenue, or to reduce an undesirable activity (sin tax).